The Atlassian Marketplace server is not reachable. PacException: 404

2012-07-25 16:03:27,534 QuartzWorker-1 WARN ServiceRunner    NotificationCacheUpdateJob-job [upm.notification.cache.NotificationCacheUpdaterImpl] Automatic plugin update check failed
com.atlassian.plugins.PacException: 404
	at com.atlassian.plugins.client.service.AbstractServiceClient.getEntityFromResponse(AbstractServiceClient.java:248)
	at com.atlassian.plugins.client.service.AbstractRestServiceClient$4.apply(AbstractRestServiceClient.java:134)
	at com.atlassian.plugins.client.service.AbstractRestServiceClient$4.apply(AbstractRestServiceClient.java:130)
	at com.atlassian.plugins.client.service.AbstractServiceClient.executeMethod(AbstractServiceClient.java:411)
	at com.atlassian.plugins.client.service.AbstractRestServiceClient.list(AbstractRestServiceClient.java:129)
	at com.atlassian.plugins.client.service.plugin.PluginVersionServiceClientImpl.findUpdates(PluginVersionServiceClientImpl.java:81)
	at com.atlassian.upm.pac.PacClientImpl.getUpdates(PacClientImpl.java:154)
	at com.atlassian.upm.notification.cache.NotificationCacheUpdaterImpl.updatePluginUpdateNotification(NotificationCacheUpdaterImpl.java:70)
	at com.atlassian.upm.notification.cache.NotificationCacheUpdaterImpl.updateAllNotifications(NotificationCacheUpdaterImpl.java:56)
	at com.atlassian.upm.notification.cache.NotificationCacheUpdateScheduler$NotificationCacheUpdateJob.execute(NotificationCacheUpdateScheduler.java:78)
	at com.atlassian.sal.jira.scheduling.JiraPluginSchedulerService.run(JiraPluginSchedulerService.java:93)
	at com.atlassian.jira.service.JiraServiceContainerImpl.run(JiraServiceContainerImpl.java:61)
	at com.atlassian.jira.service.ServiceRunner.execute(ServiceRunner.java:47)
	at org.quartz.core.JobRunShell.run(JobRunShell.java:195)
	at com.atlassian.multitenant.quartz.MultiTenantThreadPool$MultiTenantRunnable.run(MultiTenantThreadPool.java:72)
	at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:520)